Added external function tf-idf to the main.
 You can use it as a script: python tfidf.py --file corpus.mm
 Or call it as a external function: tfidfCorpus("corpus.mm")
LSI code added
Merge pull request #49 from elenagr/master

Added external function tf-idf to the main.
Merge pull request #50 from ilanfri/master

LSI code added
Merge pull request #51 from emsiepopples/master

Testing for LDA and kmeans code
Merge pull request #52 from emsiepopples/master

Correcting a typo
Merge pull request #53 from emsiepopples/master

Editted help for min and maxfreq for clarity
Added unitnorm as an option to create corpus
Merge pull request #54 from elenagr/master

Added unitnorm as an option to create corpus
Added unitnorm as an option to create corpus
Added an option to read the corpus and modify it instead of creating the corpus every time.
Merge pull request #55 from elenagr/master

Option to read an existing corpus from create_corpus.py
Option to compute the optimal number of clusters using the inertia parameter or the statistical gap
Merge pull request #56 from elenagr/master

k-means: Option to compute the optimal number of clusters using the inertia param...
Merge pull request #57 from emsiepopples/master

New code and edits to lda
Merge pull request #58 from emsiepopples/master

Added option to save model to file
LSI code extended to show both corpus topics with their component words, and also the weights of each topic within an input entry
Wrong lsi.py file added, now corrected
Merge pull request #59 from ilanfri/master

LSI file improved
Merge pull request #60 from emsiepopples/master

Changes to the output format